This lot contains 2 maps and 143 pp. of text from the Seventh Annual Report of the Director of the United States Geological Survey.

A. Map of the United States Showing Progress in Preparation and Engraving of Topographic Maps, by Henry Gannett, printed color (28.1 x 17.4"). Depicts the extent of surveying at the close of the fiscal year 1886. Surveyed areas include the southern Appalachians, the Great Basin, California and Washington state. Areas shaded in red represent regions previously surveyed. Condition: Near fine with a hint of toning along the folds and a binding trim at lower left. (A)

B. Sketch Showing Progress of Triangulation in the Appalachian Region to June 30th 1886, black and white (24.8 x 19.3"). Shows the surveying effort in the Appalachians from Atlanta to Washington D.C. The triangulation points reflect the survey work of both the Coast and Geodetic Survey and the Geological Survey. Condition: Issued folding with very faint toning. (A)

C. Seventh Annual Report of the Director of the United States Geological Survey, by the United States Geological Survey, black and white (9.1 x 12.0"). Includes the 42 pp. report of the director and 101 pp. of administrative reports including Gannett, Gilbert, Dutton and Walcott to name a few. Includes plates showing the surveying efforts in Texas, Missouri and Massachusetts. Condition: Pleasant light toning and rebound in stiff black paper boards with title on paper label on front cover. Page 21 is trimmed at bottom but without loss of text. (B+)

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Condition:

See description above.